When the gods performed the sacrifice they kept the Brahman's portion for Savitr. It cleft both his hands, and they gave him two golden ones instead, which is why he is praised as golden-handed. The portion then destroyed Bhaga's eyes and Pushan's teeth, until Indra appeased it with the holy power.
The piece torn from the sacrifice burns Bhaga's eyes and knocks out Pushan's teeth. Brihaspati, to whom it comes next, hurries to Savitr, the impeller of the gods, and asks him to impel it. So impelled it does no harm. The priest therefore takes the portion saying: at the impulse of the god Savitr, with the arms of the Ashvins, with the hands of Pushan.
What is different here:
Savitr is not injured; he is the one whose impulse makes the portion safe. No golden hands.
The hymns call Savitr golden-handed, golden-armed and broad-handed and describe him stretching out his arms to rouse and to still the world. They tell no story of how the hands became golden.
The gods assign Rudra no share. He comes with a bow, pierces the Sacrifice, which flees as a deer, and with the bow breaks Savitr's arms, plucks out Bhaga's eyes and Pushan's teeth. When the gods take refuge with him he gives Savitr back his arms.
What is different here:
Rudra in person does the injury; arms, not hands; they are restored, not replaced with gold.
Sources: Rigveda Brahmanas: the Aitareya and Kausitaki Brahmanas, tr. A. B. Keith (1920); The Satapatha-Brahmana, tr. Julius Eggeling (Sacred Books of the East 12, 41); Hymns of the Rigveda, tr. R. T. H. Griffith (1896), hymns read for the Vedic layer; The Mahabharata, tr. K. M. Ganguli (1883-96), sections read for the Vedic layer